* expr.c (expand_invoke): Mark parameter `nargs' with
        ATTRIBUTE_UNUSED.
        (PRE_LOOKUP_SWITCH): Likewise for variable `match'.
        * jcf-io.c (jcf_unexpected_eof): Mark parameter `count' with
        ATTRIBUTE_UNUSED.
        * jcf-reader.c (get_attribute): Cast a value to long
        when comparing against a signed expression.  Likewise.

From-SVN: r26907